| abstract |
[PROBLEMS] Simultaneous removal of acidic gases such as H 2 S, CO 2 and mercaptans, basic gases such as NH 3 and amines, and NH 4 + and PO 4 3− for purification of water for the purpose of environmental purification and deodorization. Development of adsorbents with multiple adsorption functions is required. A layered double hydroxide / zeolite comprising a layered double hydroxide (A) and a zeolite (B) which are non-stoichiometric compounds represented by the following general formula (a) or (b): Complex. [M 2+ 1-x M 3+ x (OH) 2 ] x + [A n− x / n · mH 2 O] x− (a), [Al 2 Li (OH) 6 ] x + [A n− x / n · mH 2 O] x− (b) (where 0.1 ≦ x ≦ 0.4, 0 <m, n is a natural number from 1 to 4, M 2 + Is at least one divalent metal represented by Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn, etc., and M 3+ is represented by Al, Fe, Cr, Ga, In, etc. trivalent least one metal, a n-it is, OH -, Cl -, Br -, CO 3 2-, NO 3 2-, SO 4 2-, Fe (CN) 6 4-, is at least one n-valent ion exchange anion represented by tartrate. ) [Selection] Figure 2 |